Table 2. Twinning statistics for the AiV1 diffraction data.

	Twinning test
		Mean acentric moments of I (moment No.)			Mean centric moments of I (moment No.)
	L test	2	3	4	2	3	4
Untwinned expected value	0.50	2.0	6.0	24.0	3.0	15.0	105.0
Twinned expected value	0.38	1.5	3.0	7.5	2.0	6.0	24.0
I23 data (72.0–2.3 Å)	0.46	2.1	6.2	25.4	2.8	11.8	71.3
P4232 data (68.0–3.5 Å)	0.23	1.2	1.7	2.7	1.4	1.9	4.4